NoClassDefFoundError

[nagulapati]

Hi All,

Does anyone know how to deploy interface classes in JBoss? I am always getting a NoClassDefFoundError when deploying an EJB bean which uses a utility interface class.

AdminWebService admin = new AdminServiceLocator();

Here AdminWebService is my interface class and AdminServiceLocator is another utility class.

While deploying the bean I am getting this error,

[ObjectName: jboss.j2ee:jndiName=HelloWorld,service=EJB
state: FAILED
I Depend On:
Depends On Me: java.lang.NoClassDefFoundError: AdminClient/AdminWebService]


Any pointers?

Thanks,
Vivek

[juha]

How's your app and utility classes packaged?

[nagulapati]

Hello Juha,

I have packed the AdminClient package along with home, remote interfaces and bean class into a jar file(ofcourse along with deployment descriptors) and deployed it. I always get the "NoClassDefFoundError" when deploying the package.

Everything works fine if I change the "AdminWebService" to a class instead of an interface class. So I made the conclusion that the interface classes are not being picked up by the classloaders.

Is "NoClassDefFoundError" exception caused only when classloader cannot find the specified class or it can be any other reason?

Thanks,
Vivek

[juha]

The classloaders do pick up interfaces, there's a problem in your packaging I think. Either the package declaration in your interface Java source is incorrect or it is being put in to an incorrect location when you create your JAR package.